Console Program closing itself for no reason before code has finished

Question

My console application exits before code has finished (after executing/trying to execute lines such as "Console.WriteLine" or "int i = 0")

I've added some breakpoints to see which line is the last to be executed before the program exits. On the first few attempts, the program exits after/when trying to execute the following line:

Console.WriteLine($"Online users to chat with ({users.Length} total):");

Then, I tried to get the value of the string in the Console.WriteLine brackets using the Immediate window- which worked. I pressed F10 to proceed to the next line, and it did- successfully printing the given parameter. But then, after pressing F10 the program closed itself, when the highlighted part was "int i = 0":

for (int i = 0; i < users.Length; i++)

Here is the code, I've added comments on all the lines the program closed so far:

public static void Main()
    {
        client = new WebClient();
        messages = null;

        try
        {
            LocalhostServer.Start("Chat");
            // Starts a server with System.Net.HttpListener. The prefix added is: http://localhost:<port>/Chat/
        }
        catch { }
        LocalhostServer.RecievedRequest += LocalhostServer_RecievedRequest;

        Console.WriteLine("Enter your name:");
        name = Console.ReadLine();
        // closed here^^ after adding a new breakpoint to this line, makes no sense to me
        try
        {
            client.DownloadString(new Uri(Url + "AddUser?name=" + name));
            // Url is a static string which is set to: "http://localhost:<port>/Chat/"
        }
        catch { }

        ShowOnlineUsers();
    }

    private static async void ShowOnlineUsers()
    {
        try
        {
            thread = new Thread(CheckIfChatStarted);
            thread.Start();

            Console.Clear();
            string[] users = (await DownloadStringUntilSuccess(Url + "GetOnlineUsers")).Split(new char[] { ',' }, StringSplitOptions.RemoveEmptyEntries);
            // closed here^^ after adding a new breakpoint to this line

            Console.WriteLine($"Online users to chat with ({users.Length} total):"); // closed here
            for (int i = 0; i < users.Length; i++) // closed here on "int i = 0;"
            {
                Console.WriteLine($"{i + 1}. {users[i]}");
            }

            Console.WriteLine("\nEnter user number to chat with:");
            recipient = users[int.Parse(Console.ReadLine()) - 1];
        }
        catch (Exception ex)
        { // hasn't reached the breakpoint on that bracket

        }

        client.DownloadString(new Uri(Url + "StartChat?name=" + name + "&recipient=" + recipient));
    }

I have no idea why it happens... Many thanks in advance to anyone's attempt to help!

P.S- Can this be caused due to a Console.Clear/Console.WriteLine commands being executed in a background thread while the main thread is waiting for user's input (Console.ReadLine)? If so, is there any solution/work-around?

Answer 1

Try adding a

Console.Readline()

To hold the Console open...